What is the major problem with using wall cavities for ductwork?
A) air moving through a wall cavity makes a lot of noise
B) Installing registers and grilles on wall spaces used for ducts is difficult
C) Using a wall cavity is generally less convenient than running ductwork
D) It is nearly impossible to make the cavity air tight
D
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Balloon-frame wood construction preceded the contemporary platform-frame wood construction. What was the primary limitation of balloon frame that led to its evolution into platform frame?
What will be an ideal response?
In what position does a boom extension for lifting have the greatest lifting capacity?
a. Boom fully extended and at 0 degrees elevation (horizontal) b. Boom fully extended and at 45 degrees elevation (pointing up at a 45 degree angle) c. Boom fully retracted and at 0 degrees elevation (horizontal) d. Boom fully retracted and angled up to its maximum angle
The average U.S. Dairy has 200 cows
Indicate whether this statement is true or false.
Economists have the tools to judge economic questions on the basis of ethical or political criteria
Indicate whether the statement is true or false